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Income Taxes Unrecognized Tax Benefits (Details) (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 3,893	$ 44,781
Additions	0	271
Reductions	0	0
Additions	520	3,064
Reductions	0	0
Settlements with taxing authorities	0	(43,315)
Lapses in statutes of limitations	(222)	(908)
Ending balance	$ 4,191	$ 3,893

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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